Electronics Forum | Mon Oct 21 23:48:13 EDT 2002 | harris
Hi: If anyone have the experience with the PCB pad design and stencil design for the uBGA? We meet the problem for it. The component data is 0.3mm diameter and 0.5 pitch. Could anyone tell me the PCB pad dimension, the stencil type and aperture dimes
Electronics Forum | Thu Jun 26 23:57:58 EDT 2014 | selvakumar
refer to this design may helping you.
Electronics Forum | Tue Jun 24 12:56:26 EDT 2014 | jmathis
Hello, As our company has begun doing an increase production of contract manufacturing I have seen more and more designs with the 0402 pad layouts that are smaller (.015 in width) than the component. Also there is only a .008 longer than the 0402 p
Electronics Forum | Tue Dec 15 22:23:52 EST 1998 | Erhan Kaya
If that's what you mean, here's what we call them: ROBBER PADS... Pretty close to the "thief" I guess. Those come with the design and if the wave soldering direction is not known at the time of design and/or there's no real estate limitation, the rob
Electronics Forum | Fri Jun 17 07:38:59 EDT 2005 | jdumont
Thanks for taking a look at the pics. I have made my thoughts on this type of design known to all. Im going to let this run through and have them put a note in the file for this board to reduce the trace size for the next time the board gets rev'd up
Electronics Forum | Mon Nov 20 20:38:21 EST 2006 | davef
�IPC-7351 LP Wizard� is the library maintenance tool that is revolutionizing the way designers work. The IPC-7351 LP family tools can give you access to options that will allow you to quickly and easily browse your PCB land pattern library to locate,
Electronics Forum | Thu Jun 16 18:16:32 EDT 2005 | davef
Josh: You're correct it's tough to describe the layout of the BGA pads and traces. We wouldn't be too excited about seeing this board either. On one hand, for the obvious lack of care taken in doing the layout, this is a junk board and you shouldn
Electronics Forum | Wed Feb 27 19:55:13 EST 2002 | nifhail
Hi, I need help to understand further on the via in pad for 0402 requirement. If I were to do the DFM over the brd design which consist of 0402 with via on pad, what is the criteria that I should look for ? I learned that the via in pad does not wor
Electronics Forum | Fri Mar 26 17:12:17 EST 2004 | ben
I have recently encountered a new pcb design with a very high density of components on either side of the pcb. One of the suggested "fixes" is to use the smt pads as vias i.e. the via will be drilled thorough the centre of the smt pad. My concern i
Electronics Forum | Fri Jun 11 06:06:41 EDT 2004 | davef
Have your designer place the via on the edge of the pad, centered and cover it with soldermask. If this is a leadless capacitor or resistor-style component, the corresponding pads will need to partially covered with solder mask to match the via in p
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